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Re: [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted

From Paolo Bonzini <pbonzini@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted
Date 2015-09-16 11:30 +0200
Message-ID <q9hcm-ja-3@gated-at.bofh.it> (permalink)
References <q9gSZ-8o1-5@gated-at.bofh.it> <q9gSZ-8o1-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 16/09/2015 10:50, Feng Wu wrote:
> +
> +	if (!irq_remapping_cap(IRQ_POSTING_CAP) ||
> +		(!kvm_arch_has_assigned_device(vcpu->kvm)))
> +		return;
> +

Better:

	if (!arch_has_assigned_device(vcpu->kvm)) ||
	    !irq_remapping_cap(IRQ_POSTING_CAP))
		return;

(In the future we might add a static_key here).

Paolo
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Thread

[PATCH v8 00/13] Add VT-d Posted-Interrupts support Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
  [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
    Re: [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when  vCPU is preempted Paolo Bonzini <pbonzini@redhat.com> - 2015-09-16 11:30 +0200
  [PATCH v8 11/13] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
    Re: [PATCH v8 11/13] KVM: Update Posted-Interrupts Descriptor when  vCPU is blocked Paolo Bonzini <pbonzini@redhat.com> - 2015-09-16 11:40 +0200
  [PATCH v8 13/13] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
  [PATCH v8 02/13] KVM: Add some helper functions for Posted-Interrupts Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
  [PATCH v8 04/13] KVM: Make struct kvm_irq_routing_table accessible Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
  [PATCH v8 12/13] KVM: Warn if 'SN' is set during posting interrupts by software Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
    Re: [PATCH v8 12/13] KVM: Warn if 'SN' is set during posting  interrupts by software Paolo Bonzini <pbonzini@redhat.com> - 2015-09-16 11:40 +0200
  [PATCH v8 06/13] vfio: Register/unregister irq_bypass_producer Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
  [PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd' Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
    Re: [PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct  kvm_kernel_irqfd' Paolo Bonzini <pbonzini@redhat.com> - 2015-09-16 11:30 +0200
      RE: [PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct  kvm_kernel_irqfd' "Wu, Feng" <feng.wu@intel.com> - 2015-09-17 04:00 +0200
        Re: [PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct  kvm_kernel_irqfd' Paolo Bonzini <pbonzini@redhat.com> - 2015-09-17 11:40 +0200
  [PATCH v8 07/13] KVM: x86: Update IRTE for posted-interrupts Feng Wu <feng.wu@intel.com> - 2015-09-16 11:10 +0200
  [PATCH v8 01/13] KVM: Extend struct pi_desc for VT-d Posted-Interrupts Feng Wu <feng.wu@intel.com> - 2015-09-16 11:20 +0200
  [PATCH v8 05/13] KVM: make kvm_set_msi_irq() public Feng Wu <feng.wu@intel.com> - 2015-09-16 11:20 +0200
  [PATCH v8 03/13] KVM: Define a new interface kvm_intr_is_single_vcpu() Feng Wu <feng.wu@intel.com> - 2015-09-16 11:20 +0200
    Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Paolo Bonzini <pbonzini@redhat.com> - 2015-09-16 11:30 +0200
      RE: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() "Wu, Feng" <feng.wu@intel.com> - 2015-09-17 05:20 +0200
        Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Paolo Bonzini <pbonzini@redhat.com> - 2015-09-17 11:50 +0200
          RE: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() "Wu, Feng" <feng.wu@intel.com> - 2015-09-17 15:40 +0200
            Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Paolo Bonzini <pbonzini@redhat.com> - 2015-09-17 16:30 +0200
              Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Radim Krčmář <rkrcmar@redhat.com> - 2015-09-17 18:00 +0200
                Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Paolo Bonzini <pbonzini@redhat.com> - 2015-09-17 18:10 +0200
                RE: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() "Wu, Feng" <feng.wu@intel.com> - 2015-09-18 01:20 +0200
                Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Paolo Bonzini <pbonzini@redhat.com> - 2015-09-18 18:20 +0200
                Re: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() Radim Krčmář <rkrcmar@redhat.com> - 2015-09-18 18:20 +0200
              RE: [PATCH v8 03/13] KVM: Define a new interface  kvm_intr_is_single_vcpu() "Wu, Feng" <feng.wu@intel.com> - 2015-09-18 01:20 +0200
  Re: [PATCH v8 00/13] Add VT-d Posted-Interrupts support Paolo Bonzini <pbonzini@redhat.com> - 2015-09-16 11:40 +0200

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